Deflector for slip-actuating weights



June 1 1926.

C.$.CHCKMER DEFLECTOR FOR SLIP ACTUATING WEIGHTS Filed April 15. 1925Patented June 1, 1926.-

UNITED STATES tssaees arser series.

CHARLES s. CRIGKMER, or DALLAS, TEXAS, assrsivon T0 rein eunanssoneosronA- TION, or DALLAS, TEXAS, A conroan'rron or DELAWARE.

DEFLECTOR FOR, SLIP-AQTUATING YVEEGHTS.

Application filed April 13, 1925- -Sei'ia1 No. 22,721.

This invention relates to new and useful improvements in deflectors forslip actuating weights.

The object of the invention is to provide a deflector for slip actuatingweights for tubing catchers, casing spears and the like.

A particular object of the invention is to provide a deflector held infixed relation to the lower end of a slip actuating weight forpreventing unintentional upward displacement of the weight, due toimpact or pressure resistance when lowering the device into the well.

A further object is to apply such deflector to the device withoutenclosing the weightsustaining spring and thereby avoiding a sand trap.

A particular object of the invention is to support the deflector at apoint adjacent the bottom of the weight froma point above the weight.

A construction designed to carry out the invention will be hereinafterdescribed to gether with other features of the invention,

The invention will be more readily understood from a reading of thefollowing specification and by reference to the accompanying drawings,in which an example of the invention is shown, and wherein Fig. 1 is anelevation of a tubing catcher equipped with a deflector constructed inaccordance with my invention,

Fig. 2 is an enlarged cross-sectional view on the line 22 of Fig. 1,

Fig. 3 is an enlarged cross-sectional view on the line 33 of Fig. 1,

Fig. 4 is an enlarged cross-sectional view on the line 4t l of Fi 1, andi Fig. 5 is a sectional view of the deflector collar. r

i In the drawings the numeral 10 designates the head of an ordinarytubing catcher such as is now in common use and of the'type shown inLetters Patent No. 1,218,549 issued to Samuel A. Guiberson, Jr, March6th, 1917; and while I have chosen such a device with which toillustrate my invention, it is to be understood that it may be appliedto any tool or device of this character or in which a slip actuatingweight is used. The head is adapted to screw onto the tubing 11. Thishead is mounted on a section of tubing 12 and is formed with upwardlyand outwardly inclined flat faces, 13. Dore tail guide ribs 1 1*. areformed centrally and longitudinally of the faces.

At the base of each face is a radial lip 15. On eachguide rib is mounteda gripper slip 16 so as to slide vertically on the face 13. Each sliphas a link 1-? pivoted to its lower end and depending through a slot 18in the lug atthe bottom of the face. A cylindrh cal weight 19 looselysurrounds the tubing section 12 and rests at its lower end upon a coiledcompression spring 20.

The spring rests upon a collar 21 at the lower end of the tubing section12 by which the catcher is attached to the lower tubing 22. At its upperend the weight has a pair of spaced ears 23 for each link 17 and betweenwhich the lower end of the link is pivoted.

The slips have teeth on their outer surfaces and when the weight 19 ismoved upwardly the slips are also moved upwardly on the faces 13 andguides 14 and are thus displaced outwardly into gripping position. Theparts which have been previously described are well known and 'in commonuse.

It will be seen that in lowering the catcher into a well casing, animpact sustained by the lower end of the weight 19, such as a suddencontact with a'body of oil or the resistance offered by the upward flowof a heavy gas pressure, would force the weight. upwardly and raise andspread the slip thus causing the catcher to unintentionally grip thecasing'and interfere with its downward passage.

vide a deflector comprising an annular col-' lar 24 having a bore 25sufliciently large to permit the spring 20 to slide freely therethrough.The bottom of the collar is rounded so as to offer less resistance tofluids and liquids.

Hanger bars 26 have their upper ends countersunk in the sumps of thehead 10 and fastened by screws 27 between the lugs 15. These bars passthrough recesses or grooves 28 in the surface of the weight and havetheir lower ends countersunk in the periphcry of the collar 24: andfastened by screws 29. The collar is thus held in fixed relation to theweight.

It will be noted that the collar is larger in diameter than the weight,although the difference may be but a fraction of an inch, withsatisfactory results. The collar being larger in diameter deflects anupward fluid pressure from the sides and bottom of the weight. The uppersurface of the collar is dished at 30 to receive the lower bevelled endof the weight and drainage through the collar is thus assured.-

lVhen the catcher is connected in the tub ing it the latter should breakabove the catcher the inertia of the weight 19, accentuated by thetendency of the spring 20 to expand owing to the normal compression bysaid weight, will cause the weight to maintain its position or remainmomentarily stationary in the casing. The head 10 and tubing section 12,however, being attached to the line of tubing will tend to descend morerapidly; consequently the links 17 being sustained by the inert weightwill support the slips 16 and the latter will be thrown outward by theinclined faces 13 and guides 14:, when the head moves downward. Theteeth of the slips being sharp and hard will readily bite into thecasing and hold the catcher against a further drop.

It will be seen that the weight is free to operate as the grooves 28 aresufliciently large to preclude binding on the hanger bars 26. Thedeflector collar will protect the weight, but will not interfere withthe operation thereof. The deflector bars and collar being of a largerdiameter than the weight, will act as a guide thus protecting the weightfrom contact with the walls of the casing.

Various changes in the size and shape of the different parts, as well asmodifications and alterations, may be made within the scope of theappended claims.

lVhat I claim, is

1. The combination with a slip actuated weight and the tubular conductorof a tubing catcher, of an annular deflector collar surrounding and freefrom said conductor, a support extending upwardly from said collar forholding the same immovable, the top of the collar being contiguous tothe lower end of the weight and open to permit a lateral passage of sandand fluid between the weight and collar.

2. The combination with a slip actuating weight, of a hang-er dependinglongitudinally of the weight, and a deflector element carried by thehanger and extending under the weight.

3. The combination with the head of a tubing catcher and the springsupported slip actuating weight, of hanger bars depending from the headand extending down the sides of the weight, and an annular deflectorcollar under the bottom of the weight attached to the hanger bars.

4. The combination with the head of a tubing catcher, the tubing sectionthereof, the sustaining spring surrounding the tubing section, of a slipactuating weight sustained by the spring and mounted to. slide on thetubing section, said weight having vertical grooves, hanger barsdepending from the head and extending through the grooves of the weight,and an annular deflecting collar surrounding the spring under the weightand immovably supported by the bars.

5. The combination with the head of a tubing catcher, the tubing sectionthereof, the sustaining spring surrounding the tubing section, of a slipactuating weight sustained by the spring and mounted to slide on thetubing section, said weight having vertical grooves, hanger barsdepending from the head and extending through the grooves of the weight,and an annular deflecting collar surrounding the spring under the weightand immovably supported by the bars, the bars extending radially fromweight and the collar being larger in diameter than the weight, wherebythe bars and collar provide a guide enclosing the weight.

6. A deflector for a slip actuating weight comprisin an annulardeflecting collar, and .a plurality of spaced supporting membersextending upwardly from the collar.

7. A deflector for a slip actuated weight comprising, an annular collarhaving a rounded bottom and an open dished top, and an upwardlyextending support for the collar.

8. A deflector for a slip actuating weight comprising, an annular collarhaving a rounded bottom and a dished top, and a plurality of upwardlyextending hanger bars attached at the lower .ends to the collar, open toexpose the weight above the collar.

In testimony whereof I aflix my signature.

CHARLES S. CRICKMER.

